<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
  <!-- 引入vue -->
  <script type="text/javascript" src="../js/vue.js"></script>
</head>

<body>
  <div id="root">
    <h2>人员列表</h2>
    <input type="text" placeholder="请输入名字" v-model="keyWord">
    <ul>
      <li v-for="(p,index) of filPersons" :key="index">
        {{p.name}}-{{p.age}}-{{p.sex}}
      </li>
    </ul>
  </div>
  <script type="text/javascript">
    Vue.config.productionTip = false //阻止 vue 在启动时生成生产提示。、

    /*    new Vue({
         el: '#root',
         data: {
           keyWord: '',
           persons: [
             { id: '001', name: '马冬梅', age: 19, sex: '女' },
             { id: '002', name: '周冬雨', age: 20, sex: '女' },
             { id: '003', name: '周杰伦', age: 21, sex: '男' },
             { id: '004', name: '温兆伦', age: 22, sex: '男' }
           ],
           filPersons: []
         },
         // 用watch进行实现
          watch: {
             keyWord: {
               immediate: true,
               handler(val) {
                 this.filPersons = this.persons.filter((p) => {
                   return p.name.indexOf(val) !== -1
                 })
               }
             }
           } 
       }) */

    new Vue({
      el: '#root',
      data: {
        keyWord: '',
        persons: [
          { id: '001', name: '马冬梅', age: 19, sex: '女' },
          { id: '002', name: '周冬雨', age: 20, sex: '女' },
          { id: '003', name: '周杰伦', age: 21, sex: '男' },
          { id: '004', name: '温兆伦', age: 22, sex: '男' }
        ]
      },
      // 用computed实现
      computed: {
        filPersons() {
          return this.persons.filter((p) => {
            return p.name.indexOf(this.keyWord) !== -1
          })
        }
      }
    })
  </script>
</body>

</html>